* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding-top: 88px;
    background: #E6EBF2;
    color: #243447;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(245,247,251,0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(40,156,255,0.14);
    z-index: 9990;
}

.header-inner {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 76px;
}

.logo {
    flex: 0 0 auto;
}

.logo img,
.footer-logo img {
    max-height: 52px;
    width: auto;
    display: block;
}

.nav-core {
    flex: 1 1 auto;
    display: flex;
    justify-content: center;
    gap: 22px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav-core a,
.drawer-nav a {
    color: #4E5F7A;
    font-weight: 700;
    transition: color .2s ease, background .2s ease;
}

.nav-core a {
    padding: 10px 4px;
    position: relative;
}

.nav-core a::after {
    content: "";
    position: absolute;
    left: 4px;
    right: 4px;
    bottom: 2px;
    height: 3px;
    border-radius: 999px;
    background: #289CFF;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .2s ease;
}

.nav-core a.active,
.nav-core a:hover,
.drawer-nav a.active,
.drawer-nav a:hover {
    color: #289CFF;
}

.nav-core a.active::after,
.nav-core a:hover::after {
    transform: scaleX(1);
}

.header-action {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.all-menu-btn {
    border: 1px solid rgba(40,156,255,0.18);
    background: rgba(255,255,255,0.74);
    color: #289CFF;
    border-radius: 999px;
    padding: 10px 16px;
    font-weight: 800;
    cursor: pointer;
    white-space: nowrap;
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 20px;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 10px 22px rgba(36,155,255,0.25);
    border: 0;
    white-space: nowrap;
}

.main-btn:hover {
    transform: translateY(-1px);
}

.mega-panel {
    position: fixed;
    top: 76px;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    width: min(1120px, calc(100% - 32px));
    background: rgba(255,255,255,0.96);
    border: 1px solid rgba(40,156,255,0.16);
    border-radius: 24px;
    box-shadow: 0 24px 60px rgba(56,92,138,0.18);
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
    overflow: hidden;
}

.mega-panel.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.mega-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 28px 10px;
}

.mega-head strong {
    display: block;
    color: #289CFF;
    font-size: 22px;
}

.mega-head p {
    margin: 4px 0 0;
    color: #66788A;
    font-size: 14px;
}

.panel-close {
    width: 38px;
    height: 38px;
    border: 1px solid rgba(40,156,255,0.18);
    background: #F5F7FB;
    color: #289CFF;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.mega-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    padding: 16px 28px 30px;
}

.mega-group {
    background: #F5F7FB;
    border: 1px solid rgba(40,156,255,0.12);
    border-radius: 20px;
    padding: 18px;
}

.mega-group h2 {
    margin: 0 0 12px;
    color: #289CFF;
    font-size: 17px;
}

.mega-link {
    display: block;
    padding: 11px 12px;
    border-radius: 14px;
    color: #243447;
    transition: background .2s ease, transform .2s ease;
}

.mega-link:hover {
    background: #FFFFFF;
    transform: translateX(2px);
}

.mega-link span {
    display: block;
    color: #289CFF;
    font-weight: 800;
}

.mega-link small {
    display: block;
    color: #66788A;
    font-size: 13px;
    line-height: 1.45;
    margin-top: 2px;
}

.mobile-header,
.mobile-drawer,
.menu-overlay {
    display: none;
}

.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(36,52,71,0.35);
    z-index: 9998;
}

.menu-overlay.show {
    display: block;
}

.site-main,
.page-main {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
}

.banner-slider {
    max-width: 1200px;
    margin: 28px auto 36px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
    aspect-ratio: 16 / 7;
}

.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}

.banner-caption,
.banner-text,
.slide-title,
.slide-desc,
.slide-content,
.slide-card,
.banner-card {
    display: none !important;
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .45s ease;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.86);
    color: #289CFF;
    font-size: 30px;
    cursor: pointer;
    z-index: 3;
    box-shadow: 0 10px 22px rgba(56,92,138,0.14);
}

.slider-prev {
    left: 16px;
}

.slider-next {
    right: 16px;
}

.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 16px;
    display: flex;
    justify-content: center;
    gap: 9px;
    z-index: 3;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.75);
    cursor: pointer;
}

.slider-dot.active {
    background: #289CFF;
}

.section {
    margin: 32px 0;
}

.section-head {
    margin: 0 0 18px;
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #289CFF;
    font-weight: 800;
    margin-bottom: 8px;
}

.kicker::before {
    content: "";
    width: 22px;
    height: 3px;
    border-radius: 999px;
    background: #289CFF;
}

h1,
h2,
h3,
.section-title {
    color: #289CFF;
    line-height: 1.28;
}

h1 {
    font-size: clamp(34px, 5vw, 56px);
    margin: 0 0 18px;
}

h2 {
    font-size: clamp(24px, 3vw, 34px);
    margin: 0 0 14px;
}

h3 {
    font-size: 20px;
    margin: 0 0 8px;
}

p {
    margin: 0 0 14px;
}

.lead {
    font-size: 18px;
    color: #4E5F7A;
}

.muted {
    color: #66788A;
}

.note {
    color: #8A9AAF;
    font-size: 14px;
}

.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.hero-panel,
.notice-box {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(40,156,255,0.16);
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    border-radius: 24px;
}

.hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(260px, .92fr);
    gap: 28px;
    align-items: center;
    padding: 34px;
    margin: 28px 0 34px;
    background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(238,242,247,.96));
}

.hero-panel.no-image {
    grid-template-columns: 1fr;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.secondary-link {
    color: #289CFF;
    font-weight: 800;
}

.content-img,
.zone-card img,
.app-section img,
.banner-slider img,
.hero-img img {
    max-width: 100%;
    height: auto;
}

.hero-img,
.image-card {
    border-radius: 22px;
    overflow: hidden;
    background: #FFFFFF;
    border: 1px solid rgba(40,156,255,0.12);
}

.hero-img img,
.image-card img {
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #FFFFFF;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.card,
.info-card,
.zone-card,
.review-card,
.faq-item,
.notice-box {
    padding: 24px;
}

.tag {
    display: inline-flex;
    color: #289CFF;
    background: rgba(40,156,255,0.09);
    border: 1px solid rgba(40,156,255,0.16);
    border-radius: 999px;
    padding: 6px 12px;
    font-weight: 800;
    font-size: 13px;
    margin-bottom: 12px;
}

.number {
    color: #289CFF;
    font-weight: 900;
    font-size: 28px;
    line-height: 1;
    margin-bottom: 10px;
}

.list-check {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-check li {
    position: relative;
    padding-left: 24px;
    margin: 10px 0;
    color: #4E5F7A;
}

.list-check li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #289CFF;
    font-weight: 900;
}

.split-section {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 24px;
    align-items: center;
}

.split-section.reverse {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
}

.product-matrix {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.review-card p {
    color: #4E5F7A;
}

.review-card strong {
    color: #289CFF;
}

.faq-list {
    display: grid;
    gap: 16px;
}

.faq-item h3 {
    margin-bottom: 10px;
}

.notice-box {
    background: #EEF2F7;
}

.page-end-reminder {
    margin: 34px 0 44px;
    padding: 24px;
    background: #DDE4EE;
    border: 1px solid rgba(40,156,255,0.15);
    border-radius: 24px;
    color: #4E5F7A;
}

.app-section {
    background: #F5F7FB;
    border-radius: 28px;
    padding: 28px;
    border: 1px solid rgba(40,156,255,0.14);
}

.site-footer {
    background: #243447;
    color: #EAF3FF;
    margin-top: 56px;
}

.footer-inner {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(260px, .95fr) minmax(0, 1.7fr);
    gap: 42px;
    padding: 46px 0 34px;
}

.footer-brand p {
    color: rgba(234,243,255,.82);
    margin-top: 14px;
}

.footer-warning {
    border-left: 3px solid #289CFF;
    padding-left: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.footer-links h2 {
    font-size: 16px;
    color: #EAF3FF;
    margin: 0 0 10px;
}

.footer-links a {
    display: block;
    color: rgba(234,243,255,.78);
    margin: 7px 0;
    font-size: 14px;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    border-top: 1px solid rgba(234,243,255,.12);
    padding: 18px 0 24px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: rgba(234,243,255,.72);
    font-size: 14px;
}

@media (max-width: 980px) {
    body {
        padding-top: 78px;
    }

    .desktop-header {
        display: none;
    }

    .mobile-header {
        display: flex;
        width: min(100%, calc(100% - 24px));
        min-height: 70px;
        gap: 12px;
    }

    .mobile-logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }

    .mobile-logo img {
        max-height: 46px;
    }

    .mobile-menu-btn {
        width: 42px;
        height: 42px;
        border: 1px solid rgba(40,156,255,0.18);
        background: #FFFFFF;
        border-radius: 14px;
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
        cursor: pointer;
    }

    .mobile-menu-btn span {
        width: 18px;
        height: 2px;
        border-radius: 999px;
        background: #289CFF;
    }

    .mobile-register {
        padding: 8px 16px;
        min-height: 38px;
        margin-left: auto;
    }

    .mobile-drawer {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: min(84vw, 320px);
        height: 100vh;
        background: #FFFFFF;
        z-index: 10001;
        transform: translateX(-102%);
        transition: transform .25s ease;
        box-shadow: 18px 0 44px rgba(56,92,138,.22);
        overflow-y: auto;
        padding: 18px;
    }

    .mobile-drawer.open {
        transform: translateX(0);
    }

    .drawer-open {
        overflow: hidden;
    }

    .drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 14px;
        margin-bottom: 16px;
    }

    .drawer-logo img {
        max-height: 44px;
    }

    .drawer-nav {
        display: grid;
        gap: 8px;
    }

    .drawer-nav a {
        padding: 12px 14px;
        background: #F5F7FB;
        border: 1px solid rgba(40,156,255,0.10);
        border-radius: 14px;
    }

    .drawer-note {
        margin: 18px 0 0;
        padding: 14px;
        border-radius: 16px;
        background: #EEF2F7;
        color: #66788A;
        font-size: 13px;
    }

    .mega-panel {
        display: none;
    }

    .hero-panel,
    .split-section,
    .split-section.reverse,
    .footer-inner {
        grid-template-columns: 1fr;
    }

    .grid-3,
    .grid-4,
    .product-matrix,
    .footer-links {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .banner-slider {
        aspect-ratio: 16 / 9;
        margin-top: 18px;
    }
}

@media (max-width: 640px) {
    .site-main,
    .page-main {
        width: min(100%, calc(100% - 22px));
    }

    .hero-panel,
    .card,
    .info-card,
    .zone-card,
    .review-card,
    .faq-item,
    .notice-box,
    .app-section {
        padding: 20px;
        border-radius: 20px;
    }

    h1 {
        font-size: 32px;
    }

    .lead {
        font-size: 16px;
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .product-matrix,
    .footer-links {
        grid-template-columns: 1fr;
    }

    .slider-arrow {
        width: 36px;
        height: 36px;
        font-size: 25px;
    }

    .slider-prev {
        left: 10px;
    }

    .slider-next {
        right: 10px;
    }

    .slider-dots {
        bottom: 10px;
    }

    .footer-bottom {
        flex-direction: column;
    }
}